Gravity box-scale.



WMA@

mamma GRAVITY BOX SGALE APPLICATION ELED NOV. 1,-1910.

ammmgpt. 1Q, 1911.

2 SHEETS--SHEET l.

C, D. BISHOP.

GRAVITY BOX SCALE.

APPLICATION FILED mm1, 1910.'

LSAl ,Patented Sept. 19, Q.

2 SHEETS-SHEET 2,

'ninrrnn THAT-LES D. IBISHUP, F NEVI BEHN, CONNECTXUUT.

ceanion of Lettere Patent.

Patented, Sept. 1,5), 191 '1.

.ippieaton fried November l, 1910, Serial No. 590,165.

To all who/z 'l' el; l', @inserirle D. Binner,

i a @iii/:en ie `ll'nited Steier residing New i eonnliy of lhiroiord end Starte o. i it, here invented eerlnin new and neef lmprmeinents in lmvity Box-Scales, el? wine-l1 he following is :i

- speeilieailion.

in use.

ln the eeeoinpenying drawingsQ Fignre l is sieA elevation oi" niy improved soule, the ineloeing easing beine' in. part broken out. Fig'. is :a roer wie with the inelosing freine ein ied. Fig. i3 in e, front View or' the Sinne. rig, 1l saine. fl? 5 if; e. YView similar lo Fi 3 of a n'iodilienlzlon oi ny seele. Fig. (l a, si de elevation ol 'ie Senne. Fig. 3S n, side View and, Fig. l n rear 5w; boi/h in part broken ont, olf e inodi'lienlion el? he belenee weigliet A is Jehe ine 'o'orlc :lier my Seele end comprimi-n n, f1 leien Hired-nre eonsisling ol. a. rein' freine :member lll bovine' parallel vertical side here lll ei 'eonneeled :it lho lop by en inverted ll eher c, bridge or V yoke 12 soil able ior snpp n'iing` perla olf the easing l and. creen; eoinneeled el ihe boloni by n bottom bridge lj bovine; :il the middle :L downfeet for ghe seid .ironie .work A, `:ind which are provided zidjecrenthe upper ends 18 with benri. s 'll io receive n, elm'll- C lo be described.. The upper endl: ol' the seid. eide bere l'l are priiwidif-d willi beeringn QOor :i shell; on which in niionnl'ed (he rear end of the upper :iran lfl olf e pair of piunllel guide arms, lille lower member F of which pair is pi\i'otelly mounted :it ile renr end by means of e Sheil G mounted between the, arms of 4the seid biilnreaied tl'oot 141-. The seid easing B comprising e box-slieped housingy suitable for inelosing the Suid freine work A und 'l'.he operating nieehnnisin generally und in nn ordinary nmnner and eon'lprises et the liront'lneens for supporting :L dial H und in eoperation therewith means for pivotelly supporting a shaft carrying an les e, pien View of vtheindex l and. n pinion J sni'ebly for bein@r operated by e 'melf K engaged with the Seid pinion di also in :in ori'liner)7 manner. j, load post L generally is poeirioned verlh enlly, sind is operelively inonnled :1nd guided as to be oseilleled in e 'verlieel plane by ineens of the Said parallel guide arms l5 and Fg is provided el; ils upper end with n lood pon or pleflz'lforni 2l, han :1, bifurented lower end 27 :1nd inlierlnedieie ll isnfid ends eoinprises a freine-like strnetnreeoneietingv l' e, pair of Verlieel Side firms cross-eeniieeled :it liheir lower ends by e bridge 325 from iihe middle of which lhe seid bifurenled lower end 27 projects down werdly. The upper endeI of the Seid :irnos 32 ere provided with benrii'ige 341-, for e shaft N by means ol which lhe seid @lood post L is pivolnlly eonneeled YLo the forward end ol the seid opper guide erin E. Above lhesnid bearings lhe said arms '52 are eroseeonneeled by e bri dg'e or yoke 35 from the eenter of whieh `the pont proper 2l l projects n pwmdly and which supports :it its opper end the Suid seele platform or pen 2l. Adjacent the niiddle Q2 of the seid bridge 33 of lhe load poet li nre eilnehwl eiplilibrnl'ing ineens lo be described. The seid upper guide erin lil comprises n double erin structure or :1n essentially reelnnguhu' rmne work comprising;l n poil` of Side, arms Q having); nl; [he rear ends :i pair of enr4 2S snilnble lier reeeiving he said shell l) und nt the forward ends :i pair ol` essenlielly similar enry or :lrni extensions 2l snilnble lor receivingl lhe Seid Shnli, N und by menne ol'z Vwhieh the forward end of the seid guide :irin or freine IC is pivotully eonneeled ilo the seid ,lood poelJ L, the seid lateral urine, Q5 being oiz suitable spread to have en :ippreeinble guiding ell'eel oper-:ding lo niiinlein the seid loud pont li in n vertieel plone ns deaeribed :is opposed lo lnlernl or distorting( strains due to ])lne,ing e load on the said seele plnllorni in posilions lo one side of lhe seid 'vertical pleno. lhe function of the seid guide nrnl or ilfrznne E in ensenlinlly liiniled lio guiding ne deseribedi The seid lower guide erin F is generally Het :ind cent elly loenled `und comprises)y n, guide drin proper 2G :iii itsl reen', parallel lo the Suid guide erin or lli-nine lll, hns ils rear end pivotnlly nionnled on the seid shell, G as described and the forward end of the said guide arm proper 26 is pivolnlly Connected ro the said bifurented lower end 27 of the said load post L by ineens of e shaft O.

A forward extension 28 of the said lower guide arm proper 26 is iorlied at 29, and is divided into an upper branch 30 and a lower branch 31 having the usualv means for supporting and guiding the said rack K so to be in engaging position relatively to the said pinion J. rl`lie said shaft C is adjacent the said load post L and has a drinn or cylinder Q rigidly secured 'thereto and which is centi-ally .located and as mounted by means ot the said shaft C is operative in the same plane as the said load post L, and is secured to the said load post by a balancing ribbon or band l?. @ne end of the said ribbon lil is secured to the said load post L at the point 22 as described and lo cated at the said central opeative plane and the other end is attached to the said drinn Q at a point 37 on the periphery generally below the said shaft C and intermediate the said ends is guided by the said periphery so as to apply or transmit the equilibrating etiect ot the balancing .veiglits to be described tothe said load post L.

The balancing or equilibrating means comI prise a pair of weights It generally similar and laterally disposed at equalu distances from the said drum Q and the said central operative' plane, are adjustably secured to the said shaft C by supporting rods S and are normally in a pendant position and in eciuilibrum with the said load post L. As a load is applied to the said load post L the said load post. drops and the said weights lt are raised, increasing the effective lever arm until a new point ot' equilibrium is found.

In the modification shown in Fig. 5, guide rollers T bear against the side arnis 32 as shown which guide the said arms so as to maintain the line oi' movement of thesame in a. vertical plane, there being' our such rollers shown, two on each side, and the said side arms being extended as shown at 38 below the bridge 33 so as to provide additional guiding length. l

ln the modifications .shown in '7 and -Sa single centrally located weight ltl is shown, 'which construction is serviceable for weighing relatively siuall loads.

My scale as described is particularly adapted to give accurate results in weighing essentially regardless as to the position ot the load on the scale pan or platform, and this is the case eveil when set up so that the plane of movement of the load post deviates appreciably from the vertical plane.

As described, the guiding mechanisn'i serves to guide the load post so that the same will move in a definite plane and which plane is vertical when the scale is set up in normal position, and the load post and its load are supported essentially directly by the balancing or supporting ribbon and the position of support or rest is determined by the position of equilibrium for the weights or gravity balancing means corresponding to the load.

lt is apparent that some changes 'from the specific construction herein disclosed may be made and therefore l do not 'wish to be understood as limiting myself to the precise forni of construction shown and de scribed, but desire the liberty to make such changes, in working my invention, as may :fairly come within the spirit and scopeof the same. 4

l claim as my invention 1. ln a scale, a load post, means for guiding the same constantly in a fixed plane` supporting means comprising a ribben having oneend attached. to the said post, a drum to which the otherend of the said ribbon is attached, asliaft supporting the said drum, gravity balancing .means supported by the said shaft, and the said post supported directly and entirely by the saidA ribbon and guiding means.

2. ln a scale having a load post, means for guiding the same generally in a iixed plane and supporting means comprising a ribbon, a druiii therefor, and a balancing a pivotally mounted shaft adjacent the saldi post, and gravity'balancingmeans secured to the said shaft and. symmetrically disposed relatively to the said plane and com pi'ising a duplex set ot' weights depending from the said shaft and laterally disposed, one on each side 'of the said drum.

/lfln a scale having a load post, means,

for guiding the same generally in a lixed plane, and supporting mechanism connected to the said post, auxiliary means 'for guid U ing the saidload comprising lateral guiding rollers in opel-alive connection therewith.

' CHAR-LES D. BISHUP. `lVitnesses Nnw'roN L. Looitwoon, Sniirrniw H. CLARKE.

iio 

